// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_
#define CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_

#include "base/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "cc/surfaces/surface_id.h"
#include "cc/surfaces/surface_reference_owner.h"

namespace cc {

// Creates surface references. The referenced surface will be kept alive as
// long as there is a reference to it.
class SurfaceReferenceFactory
    : public base::RefCountedThreadSafe<SurfaceReferenceFactory> {
public:
    // Creates a reference to the surface with the given surface id and returns
    // a closure that must be called exactly once to remove the reference.
    virtual base::Closure CreateReference(SurfaceReferenceOwner* owner,
        const SurfaceId& surface_id) const = 0;

    SurfaceReferenceFactory() = default;

protected:
    virtual ~SurfaceReferenceFactory() = default;

private:
    friend class base::RefCountedThreadSafe<SurfaceReferenceFactory>;

    DISALLOW_COPY_AND_ASSIGN(SurfaceReferenceFactory);
};

} // namespace cc

#endif // CC_SURFACES_SURFACE_REFERENCE_FACTORY_H_
